Thermodynamics ...

For a particular reaction $$\triangle H^0 = -76.6 KJ$$ and $$\Delta S^0 = 226 JK^{-1}$$. This reaction is:

Given the following data:

Substance	$$\Delta H^{o}(kJ/mol)$$	$$\Delta S^{o}(kJ/mol)$$	$$\Delta G^{o}(kJ/mol)$$
$$FeO(s)$$	$$-266.3$$	$$57.49$$	$$-245.12$$
$$C$$(Graphite)	$$0$$	$$5.74$$	$$0$$
$$Fe(s)$$	$$0$$	$$27.28$$	$$0$$
$$CO(g)$$	$$-110.5$$	$$197.6$$	$$-137.15$$

Determine at what temperature the following reaction is spontaneous?
$$FeO(s)+C(Graphite)\rightarrow Fe(s)+CO(g)$$

For the following concentration cell,to be spontaneous $$Pt({H}_{2}){P}_{1} atm |HCl\ || \ Pt({H}_{2}), {P}_{2} atm$$.

The change in entropy of $$2$$ moles of an ideal gas upon isothermal expansion at $$243.6K$$ from $$20$$ litre until the pressure becomes $$1atm$$ is:

Given the following data:

Substance	$$\triangle H^0 (kJ/mol)$$	$$S^0 (J/molK)$$	$$\triangle G^0(kJ/mol)$$
FeO(s)	$$-266.3$$	$$57.49$$	$$-245.12$$
C(Graphite)	0	$$5.74$$	0
Fe(s)	0	$$27.28$$	0
CO(g)	$$-110.5$$	$$197.6$$	$$-137.15$$

Determine at what temperature the following reaction is spontaneous?
$$FeO(s) + C(Graphite) \rightarrow Fe(s) + CO(g) $$ 

An intimate of ferric oxide $$({Fe}_{2}{O}_{3})$$ and aluminum (Al) is used as solid rocket fuel. Calculate fuel value per gram of the mixture Heats of formation are as follows: $$\triangle { H }_{ f }\left( { Al }_{ 2 }{ O }_{ 3 } \right) =399\quad kcal/mole$$
$$\triangle { H }_{ f }\left( { Fe }_{ 2 }{ O }_{ 3 } \right) =199\quad kcal/mole$$

The lattice energy of $$CsI(s)$$ and the enthalpy of solution is $$33\ kJ/mol$$. Calculate the enthalpy of hydration $$(kJ)$$ of 0.65 moles of $$CsI$$.

Heat of reaction for, $$CO(g)+\dfrac{1}{2}{O}_{2}(g)\rightarrow {CO}_{2}(g)$$ at constant $$V$$ is $$-67.71Kcal$$ at $${17}^{o}C$$. The heat of reaction at constant $$P$$ at $${7}^{o}C$$ is :

When two mole of an ideal gas $$\left( { C }_{ p.m }=\cfrac { 5 }{ 2 } R \right) $$ heated from $$300K$$ to $$600K$$ at constant pressure. The change in entropy of gas ($$\Delta S$$) is:

A system changes its state irreversibly at $$300\ K$$ in which it absorbs $$300\ cals$$ of heat. When the same change is carried out reversibly the amount of heat absorbed is $$900\ cals$$. The change in entropy of the system is equal to?